Noncom (noun)

1. A non-commissioned officer in the military, typically a sergeant or corporal.
2. A member of the armed forces who holds a rank below that of a commissioned officer.

Origin:

An abbreviation of the phrase non-commissioned officer, a military rank in the armed forces that is below that of a commissioned officer.

Examples:

1. The noncom was in charge of training the new recruits.
2. The noncom had served in the army for over 20 years.
3. The noncom was responsible for the discipline and welfare of the soldiers under his command.
4. The noncom received a promotion for his service in the war.
5. The noncom was respected by the other soldiers for his leadership and experience.